| Commit message (Collapse) | Author | Age |
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commit 06989c799f04810f6876900d4760c0edda369cf7 upstream.
When syncing the log, the final phase of a fsync operation, we need to
either create a log root's item or update the existing item in the log
tree of log roots, and that depends on the current value of the log
root's log_transid - if it's 1 we need to create the log root item,
otherwise it must exist already and we update it. Since there is no
synchronization between updating the log_transid and checking it for
deciding whether the log root's item needs to be created or updated, we
end up with a tiny race window that results in attempts to update the
item to fail because the item was not yet created:
CPU 1 CPU 2
btrfs_sync_log()
lock root->log_mutex
set log root's log_transid to 1
unlock root->log_mutex
btrfs_sync_log()
lock root->log_mutex
sets log root's
log_transid to 2
unlock root->log_mutex
update_log_root()
sees log root's log_transid
with a value of 2
calls btrfs_update_root(),
which fails with -EUCLEAN
and causes transaction abort
Until recently the race lead to a BUG_ON at btrfs_update_root(), but after
the recent commit 7ac1e464c4d47 ("btrfs: Don't panic when we can't find a
root key") we just abort the current transaction.
A sample trace of the BUG_ON() on a SLE12 kernel:
------------[ cut here ]------------
kernel BUG at ../fs/btrfs/root-tree.c:157!
Oops: Exception in kernel mode, sig: 5 [#1]
SMP NR_CPUS=2048 NUMA pSeries
(...)
Supported: Yes, External
CPU: 78 PID: 76303 Comm: rtas_errd Tainted: G X 4.4.156-94.57-default #1
task: c00000ffa906d010 ti: c00000ff42b08000 task.ti: c00000ff42b08000
NIP: d000000036ae5cdc LR: d000000036ae5cd8 CTR: 0000000000000000
REGS: c00000ff42b0b860 TRAP: 0700 Tainted: G X (4.4.156-94.57-default)
MSR: 8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR: 22444484 XER: 20000000
CFAR: d000000036aba66c SOFTE: 1
GPR00: d000000036ae5cd8 c00000ff42b0bae0 d000000036bda220 0000000000000054
GPR04: 0000000000000001 0000000000000000 c00007ffff8d37c8 0000000000000000
GPR08: c000000000e19c00 0000000000000000 0000000000000000 3736343438312079
GPR12: 3930373337303434 c000000007a3a800 00000000007fffff 0000000000000023
GPR16: c00000ffa9d26028 c00000ffa9d261f8 0000000000000010 c00000ffa9d2ab28
GPR20: c00000ff42b0bc48 0000000000000001 c00000ff9f0d9888 0000000000000001
GPR24: c00000ffa9d26000 c00000ffa9d261e8 c00000ffa9d2a800 c00000ff9f0d9888
GPR28: c00000ffa9d26028 c00000ffa9d2aa98 0000000000000001 c00000ffa98f5b20
NIP [d000000036ae5cdc] btrfs_update_root+0x25c/0x4e0 [btrfs]
LR [d000000036ae5cd8] btrfs_update_root+0x258/0x4e0 [btrfs]
Call Trace:
[c00000ff42b0bae0] [d000000036ae5cd8] btrfs_update_root+0x258/0x4e0 [btrfs] (unreliable)
[c00000ff42b0bba0] [d000000036b53610] btrfs_sync_log+0x2d0/0xc60 [btrfs]
[c00000ff42b0bce0] [d000000036b1785c] btrfs_sync_file+0x44c/0x4e0 [btrfs]
[c00000ff42b0bd80] [c00000000032e300] vfs_fsync_range+0x70/0x120
[c00000ff42b0bdd0] [c00000000032e44c] do_fsync+0x5c/0xb0
[c00000ff42b0be10] [c00000000032e8dc] SyS_fdatasync+0x2c/0x40
[c00000ff42b0be30] [c000000000009488] system_call+0x3c/0x100
Instruction dump:
7f43d378 4bffebb9 60000000 88d90008 3d220000 e8b90000 3b390009 e87a01f0
e8898e08 e8f90000 4bfd48e5 60000000 <0fe00000> e95b0060 39200004 394a0ea0
---[ end trace 8f2dc8f919cabab8 ]---
So fix this by doing the check of log_transid and updating or creating the
log root's item while holding the root's log_mutex.
Fixes: 7237f1833601d ("Btrfs: fix tree logs parallel sync")
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit de36e16d1557a0b6eb328bc3516359a12ba5c25c ]
Current overlap checking cannot correctly handle
a case which is baseminor < existing baseminor &&
baseminor + minorct > existing baseminor + minorct.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 7881ef3f33bb80f459ea6020d1e021fc524a6348 ]
Under certain conditions, lru_count may drop below zero resulting in
a large amount of log spam like this:
vmscan: shrink_slab: gfs2_dump_glock+0x3b0/0x630 [gfs2] \
negative objects to delete nr=-1
This happens as follows:
1) A glock is moved from lru_list to the dispose list and lru_count is
decremented.
2) The dispose function calls cond_resched() and drops the lru lock.
3) Another thread takes the lru lock and tries to add the same glock to
lru_list, checking if the glock is on an lru list.
4) It is on a list (actually the dispose list) and so it avoids
incrementing lru_count.
5) The glock is moved to lru_list.
5) The original thread doesn't dispose it because it has been re-added
to the lru list but the lru_count has still decreased by one.
Fix by checking if the LRU flag is set on the glock rather than checking
if the glock is on some list and rearrange the code so that the LRU flag
is added/removed precisely when the glock is added/removed from lru_list.
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 1b426bac66e6cc83c9f2d92b96e4e72acf43419a upstream.
hugetlb uses a fault mutex hash table to prevent page faults of the
same pages concurrently. The key for shared and private mappings is
different. Shared keys off address_space and file index. Private keys
off mm and virtual address. Consider a private mappings of a populated
hugetlbfs file. A fault will map the page from the file and if needed
do a COW to map a writable page.
Hugetlbfs hole punch uses the fault mutex to prevent mappings of file
pages. It uses the address_space file index key. However, private
mappings will use a different key and could race with this code to map
the file page. This causes problems (BUG) for the page cache remove
code as it expects the page to be unmapped. A sample stack is:
page dumped because: VM_BUG_ON_PAGE(page_mapped(page))
kernel BUG at mm/filemap.c:169!
...
RIP: 0010:unaccount_page_cache_page+0x1b8/0x200
...
Call Trace:
__delete_from_page_cache+0x39/0x220
delete_from_page_cache+0x45/0x70
remove_inode_hugepages+0x13c/0x380
? __add_to_page_cache_locked+0x162/0x380
hugetlbfs_fallocate+0x403/0x540
? _cond_resched+0x15/0x30
? __inode_security_revalidate+0x5d/0x70
? selinux_file_permission+0x100/0x130
vfs_fallocate+0x13f/0x270
ksys_fallocate+0x3c/0x80
__x64_sys_fallocate+0x1a/0x20
do_syscall_64+0x5b/0x180
entry_SYSCALL_64_after_hwframe+0x44/0xa9
There seems to be another potential COW issue/race with this approach
of different private and shared keys as noted in commit 8382d914ebf7
("mm, hugetlb: improve page-fault scalability").
Since every hugetlb mapping (even anon and private) is actually a file
mapping, just use the address_space index key for all mappings. This
results in potentially more hash collisions. However, this should not
be the common case.
Link: http://lkml.kernel.org/r/20190328234704.27083-3-mike.kravetz@oracle.com
Link: http://lkml.kernel.org/r/20190412165235.t4sscoujczfhuiyt@linux-r8p5
Fixes: b5cec28d36f5 ("hugetlbfs: truncate_hugepages() takes a range of pages")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Reviewed-by: Davidlohr Bueso <dbueso@suse.de>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e32773357d5cc271b1d23550b3ed026eb5c2a468 upstream.
A failed call to kobject_init_and_add() must be followed by a call to
kobject_put(). Currently in the error path when adding fs_devices we
are missing this call. This could be fixed by calling
btrfs_sysfs_remove_fsid() if btrfs_sysfs_add_fsid() returns an error or
by adding a call to kobject_put() directly in btrfs_sysfs_add_fsid().
Here we choose the second option because it prevents the slightly
unusual error path handling requirements of kobject from leaking out
into btrfs functions.
Add a call to kobject_put() in the error path of kobject_add_and_init().
This causes the release method to be called if kobject_init_and_add()
fails. open_tree() is the function that calls btrfs_sysfs_add_fsid()
and the error code in this function is already written with the
assumption that the release method is called during the error path of
open_tree() (as seen by the call to btrfs_sysfs_remove_fsid() under the
fail_fsdev_sysfs label).
Cc: stable@vger.kernel.org # v4.4+
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tobin C. Harding <tobin@kernel.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0c713cbab6200b0ab6473b50435e450a6e1de85d upstream.
When we do a full fsync (the bit BTRFS_INODE_NEEDS_FULL_SYNC is set in the
inode) that happens to be ranged, which happens during a msync() or writes
for files opened with O_SYNC for example, we can end up with a corrupt log,
due to different file extent items representing ranges that overlap with
each other, or hit some assertion failures.
When doing a ranged fsync we only flush delalloc and wait for ordered
exents within that range. If while we are logging items from our inode
ordered extents for adjacent ranges complete, we end up in a race that can
make us insert the file extent items that overlap with others we logged
previously and the assertion failures.
For example, if tree-log.c:copy_items() receives a leaf that has the
following file extents items, all with a length of 4K and therefore there
is an implicit hole in the range 68K to 72K - 1:
(257 EXTENT_ITEM 64K), (257 EXTENT_ITEM 72K), (257 EXTENT_ITEM 76K), ...
It copies them to the log tree. However due to the need to detect implicit
holes, it may release the path, in order to look at the previous leaf to
detect an implicit hole, and then later it will search again in the tree
for the first file extent item key, with the goal of locking again the
leaf (which might have changed due to concurrent changes to other inodes).
However when it locks again the leaf containing the first key, the key
corresponding to the extent at offset 72K may not be there anymore since
there is an ordered extent for that range that is finishing (that is,
somewhere in the middle of btrfs_finish_ordered_io()), and it just
removed the file extent item but has not yet replaced it with a new file
extent item, so the part of copy_items() that does hole detection will
decide that there is a hole in the range starting from 68K to 76K - 1,
and therefore insert a file extent item to represent that hole, having
a key offset of 68K. After that we now have a log tree with 2 different
extent items that have overlapping ranges:
1) The file extent item copied before copy_items() released the path,
which has a key offset of 72K and a length of 4K, representing the
file range 72K to 76K - 1.
2) And a file extent item representing a hole that has a key offset of
68K and a length of 8K, representing the range 68K to 76K - 1. This
item was inserted after releasing the path, and overlaps with the
extent item inserted before.
The overlapping extent items can cause all sorts of unpredictable and
incorrect behaviour, either when replayed or if a fast (non full) fsync
happens later, which can trigger a BUG_ON() when calling
btrfs_set_item_key_safe() through __btrfs_drop_extents(), producing a
trace like the following:
[61666.783269] ------------[ cut here ]------------
[61666.783943] kernel BUG at fs/btrfs/ctree.c:3182!
[61666.784644] invalid opcode: 0000 [#1] PREEMPT SMP
(...)
[61666.786253] task: ffff880117b88c40 task.stack: ffffc90008168000
[61666.786253] RIP: 0010:btrfs_set_item_key_safe+0x7c/0xd2 [btrfs]
[61666.786253] RSP: 0018:ffffc9000816b958 EFLAGS: 00010246
[61666.786253] RAX: 0000000000000000 RBX: 000000000000000f RCX: 0000000000030000
[61666.786253] RDX: 0000000000000000 RSI: ffffc9000816ba4f RDI: ffffc9000816b937
[61666.786253] RBP: ffffc9000816b998 R08: ffff88011dae2428 R09: 0000000000001000
[61666.786253] R10: 0000160000000000 R11: 6db6db6db6db6db7 R12: ffff88011dae2418
[61666.786253] R13: ffffc9000816ba4f R14: ffff8801e10c4118 R15: ffff8801e715c000
[61666.786253] FS: 00007f6060a18700(0000) GS:ffff88023f5c0000(0000) knlGS:0000000000000000
[61666.786253] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[61666.786253] CR2: 00007f6060a28000 CR3: 0000000213e69000 CR4: 00000000000006e0
[61666.786253] Call Trace:
[61666.786253] __btrfs_drop_extents+0x5e3/0xaad [btrfs]
[61666.786253] ? time_hardirqs_on+0x9/0x14
[61666.786253] btrfs_log_changed_extents+0x294/0x4e0 [btrfs]
[61666.786253] ? release_extent_buffer+0x38/0xb4 [btrfs]
[61666.786253] btrfs_log_inode+0xb6e/0xcdc [btrfs]
[61666.786253] ? lock_acquire+0x131/0x1c5
[61666.786253] ? btrfs_log_inode_parent+0xee/0x659 [btrfs]
[61666.786253] ? arch_local_irq_save+0x9/0xc
[61666.786253] ? btrfs_log_inode_parent+0x1f5/0x659 [btrfs]
[61666.786253] btrfs_log_inode_parent+0x223/0x659 [btrfs]
[61666.786253] ? arch_local_irq_save+0x9/0xc
[61666.786253] ? lockref_get_not_zero+0x2c/0x34
[61666.786253] ? rcu_read_unlock+0x3e/0x5d
[61666.786253] btrfs_log_dentry_safe+0x60/0x7b [btrfs]
[61666.786253] btrfs_sync_file+0x317/0x42c [btrfs]
[61666.786253] vfs_fsync_range+0x8c/0x9e
[61666.786253] SyS_msync+0x13c/0x1c9
[61666.786253] entry_SYSCALL_64_fastpath+0x18/0xad
A sample of a corrupt log tree leaf with overlapping extents I got from
running btrfs/072:
item 14 key (295 108 200704) itemoff 2599 itemsize 53
extent data disk bytenr 0 nr 0
extent data offset 0 nr 458752 ram 458752
item 15 key (295 108 659456) itemoff 2546 itemsize 53
extent data disk bytenr 4343541760 nr 770048
extent data offset 606208 nr 163840 ram 770048
item 16 key (295 108 663552) itemoff 2493 itemsize 53
extent data disk bytenr 4343541760 nr 770048
extent data offset 610304 nr 155648 ram 770048
item 17 key (295 108 819200) itemoff 2440 itemsize 53
extent data disk bytenr 4334788608 nr 4096
extent data offset 0 nr 4096 ram 4096
The file extent item at offset 659456 (item 15) ends at offset 823296
(659456 + 163840) while the next file extent item (item 16) starts at
offset 663552.
Another different problem that the race can trigger is a failure in the
assertions at tree-log.c:copy_items(), which expect that the first file
extent item key we found before releasing the path exists after we have
released path and that the last key we found before releasing the path
also exists after releasing the path:
$ cat -n fs/btrfs/tree-log.c
4080 if (need_find_last_extent) {
4081 /* btrfs_prev_leaf could return 1 without releasing the path */
4082 btrfs_release_path(src_path);
4083 ret = btrfs_search_slot(NULL, inode->root, &first_key,
4084 src_path, 0, 0);
4085 if (ret < 0)
4086 return ret;
4087 ASSERT(ret == 0);
(...)
4103 if (i >= btrfs_header_nritems(src_path->nodes[0])) {
4104 ret = btrfs_next_leaf(inode->root, src_path);
4105 if (ret < 0)
4106 return ret;
4107 ASSERT(ret == 0);
4108 src = src_path->nodes[0];
4109 i = 0;
4110 need_find_last_extent = true;
4111 }
(...)
The second assertion implicitly expects that the last key before the path
release still exists, because the surrounding while loop only stops after
we have found that key. When this assertion fails it produces a stack like
this:
[139590.037075] assertion failed: ret == 0, file: fs/btrfs/tree-log.c, line: 4107
[139590.037406] ------------[ cut here ]------------
[139590.037707] kernel BUG at fs/btrfs/ctree.h:3546!
[139590.038034] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC PTI
[139590.038340] CPU: 1 PID: 31841 Comm: fsstress Tainted: G W 5.0.0-btrfs-next-46 #1
(...)
[139590.039354] RIP: 0010:assfail.constprop.24+0x18/0x1a [btrfs]
(...)
[139590.040397] RSP: 0018:ffffa27f48f2b9b0 EFLAGS: 00010282
[139590.040730] RAX: 0000000000000041 RBX: ffff897c635d92c8 RCX: 0000000000000000
[139590.041105] RDX: 0000000000000000 RSI: ffff897d36a96868 RDI: ffff897d36a96868
[139590.041470] RBP: ffff897d1b9a0708 R08: 0000000000000000 R09: 0000000000000000
[139590.041815] R10: 0000000000000008 R11: 0000000000000000 R12: 0000000000000013
[139590.042159] R13: 0000000000000227 R14: ffff897cffcbba88 R15: 0000000000000001
[139590.042501] FS: 00007f2efc8dee80(0000) GS:ffff897d36a80000(0000) knlGS:0000000000000000
[139590.042847] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[139590.043199] CR2: 00007f8c064935e0 CR3: 0000000232252002 CR4: 00000000003606e0
[139590.043547] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[139590.043899] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[139590.044250] Call Trace:
[139590.044631] copy_items+0xa3f/0x1000 [btrfs]
[139590.045009] ? generic_bin_search.constprop.32+0x61/0x200 [btrfs]
[139590.045396] btrfs_log_inode+0x7b3/0xd70 [btrfs]
[139590.045773] btrfs_log_inode_parent+0x2b3/0xce0 [btrfs]
[139590.046143] ? do_raw_spin_unlock+0x49/0xc0
[139590.046510] btrfs_log_dentry_safe+0x4a/0x70 [btrfs]
[139590.046872] btrfs_sync_file+0x3b6/0x440 [btrfs]
[139590.047243] btrfs_file_write_iter+0x45b/0x5c0 [btrfs]
[139590.047592] __vfs_write+0x129/0x1c0
[139590.047932] vfs_write+0xc2/0x1b0
[139590.048270] ksys_write+0x55/0xc0
[139590.048608] do_syscall_64+0x60/0x1b0
[139590.048946] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[139590.049287] RIP: 0033:0x7f2efc4be190
(...)
[139590.050342] RSP: 002b:00007ffe743243a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[139590.050701] RAX: ffffffffffffffda RBX: 0000000000008d58 RCX: 00007f2efc4be190
[139590.051067] RDX: 0000000000008d58 RSI: 00005567eca0f370 RDI: 0000000000000003
[139590.051459] RBP: 0000000000000024 R08: 0000000000000003 R09: 0000000000008d60
[139590.051863] R10: 0000000000000078 R11: 0000000000000246 R12: 0000000000000003
[139590.052252] R13: 00000000003d3507 R14: 00005567eca0f370 R15: 0000000000000000
(...)
[139590.055128] ---[ end trace 193f35d0215cdeeb ]---
So fix this race between a full ranged fsync and writeback of adjacent
ranges by flushing all delalloc and waiting for all ordered extents to
complete before logging the inode. This is the simplest way to solve the
problem because currently the full fsync path does not deal with ranges
at all (it assumes a full range from 0 to LLONG_MAX) and it always needs
to look at adjacent ranges for hole detection. For use cases of ranged
fsyncs this can make a few fsyncs slower but on the other hand it can
make some following fsyncs to other ranges do less work or no need to do
anything at all. A full fsync is rare anyway and happens only once after
loading/creating an inode and once after less common operations such as a
shrinking truncate.
This is an issue that exists for a long time, and was often triggered by
generic/127, because it does mmap'ed writes and msync (which triggers a
ranged fsync). Adding support for the tree checker to detect overlapping
extents (next patch in the series) and trigger a WARN() when such cases
are found, and then calling btrfs_check_leaf_full() at the end of
btrfs_insert_file_extent() made the issue much easier to detect. Running
btrfs/072 with that change to the tree checker and making fsstress open
files always with O_SYNC made it much easier to trigger the issue (as
triggering it with generic/127 is very rare).
CC: stable@vger.kernel.org # 3.16+
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 5a5ec83d6ac974b12085cd99b196795f14079037 upstream.
Commit 4d207133e9c3 changed the types of the statistic values in struct
gfs2_lkstats from s64 to u64. Because of that, what should be a signed
value in gfs2_update_stats turned into an unsigned value. When shifted
right, we end up with a large positive value instead of a small negative
value, which results in an incorrect variance estimate.
Fixes: 4d207133e9c3 ("gfs2: Make statistics unsigned, suitable for use with do_div()")
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Cc: stable@vger.kernel.org # v4.4+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ee0ed02ca93ef1ecf8963ad96638795d55af2c14 upstream.
It is possible that unlinked inode enters ext4_setattr() (e.g. if
somebody calls ftruncate(2) on unlinked but still open file). In such
case we should not delete the inode from the orphan list if truncate
fails. Note that this is mostly a theoretical concern as filesystem is
corrupted if we reach this path anyway but let's be consistent in our
orphan handling.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c2d1b3aae33605a61cbab445d8ae1c708ccd2698 upstream.
Up until now trimming the freespace was done irrespective of what the
arguments of the FITRIM ioctl were. For example fstrim's -o/-l arguments
will be entirely ignored. Fix it by correctly handling those paramter.
This requires breaking if the found freespace extent is after the end of
the passed range as well as completing trim after trimming
fstrim_range::len bytes.
Fixes: 499f377f49f0 ("btrfs: iterate over unused chunk space in FITRIM")
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 4e9036042fedaffcd868d7f7aa948756c48c637d ]
To choose whether to pick the GID from the old (16bit) or new (32bit)
field, we should check if the old gid field is set to 0xffff. Mainline
checks the old *UID* field instead - cut'n'paste from the corresponding
code in ufs_get_inode_uid().
Fixes: 252e211e90ce
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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commit 00abf69dd24f4444d185982379c5cc3bb7b6d1fc upstream.
xfstest generic/452 was triggering a "Busy inodes after umount" warning.
ceph was allowing the mount to go read-only without first flushing out
dirty inodes in the cache. Ensure we sync out the filesystem before
allowing a remount to proceed.
Cc: stable@vger.kernel.org
Link: http://tracker.ceph.com/issues/39571
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 0cbade024ba501313da3b7e5dd2a188a6bc491b5 upstream.
fstests generic/228 reported this failure that fuse fallocate does not
honor what 'ulimit -f' has set.
This adds the necessary inode_newsize_ok() check.
Signed-off-by: Liu Bo <bo.liu@linux.alibaba.com>
Fixes: 05ba1f082300 ("fuse: add FALLOCATE operation")
Cc: <stable@vger.kernel.org> # v3.5
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 9de5be06d0a89ca97b5ab902694d42dfd2bb77d2 upstream.
Writepage requests were cropped to i_size & 0xffffffff, which meant that
mmaped writes to any file larger than 4G might be silently discarded.
Fix by storing the file size in a properly sized variable (loff_t instead
of size_t).
Reported-by: Antonio SJ Musumeci <trapexit@spawn.link>
Fixes: 6eaf4782eb09 ("fuse: writepages: crop secondary requests")
Cc: <stable@vger.kernel.org> # v3.13
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f02f3755dbd14fb935d24b14650fff9ba92243b8 upstream.
stat command with soft mount never return after server is stopped.
When alloc a new client, the state of the client will be set to
NFS4CLNT_LEASE_EXPIRED.
When the server is stopped, the state manager will work, and accord
the state to recover. But the state is NFS4CLNT_LEASE_EXPIRED, it
will drain the slot table and lead other task to wait queue, until
the client recovered. Then the stat command is hung.
When discover server trunking, the client will renew the lease,
but check the client state, it lead the client state corruption.
So, we need to call state manager to recover it when detect server
ip trunking.
Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 6a54b2e002c9d00b398d35724c79f9fe0d9b38fb upstream.
Change strcat to strncpy in the "None" case to fix a buffer overflow
when cinode->oplock is reset to 0 by another thread accessing the same
cinode. It is never valid to append "None" to any other message.
Consolidate multiple writes to cinode->oplock to reduce raciness.
Signed-off-by: Christoph Probst <kernel@probst.it>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 592acbf16821288ecdc4192c47e3774a4c48bb64 upstream.
This commit zeroes out the unused memory region in the buffer_head
corresponding to the extent metablock after writing the extent header
and the corresponding extent node entries.
This is done to prevent random uninitialized data from getting into
the filesystem when the extent block is synced.
This fixes CVE-2019-11833.
Signed-off-by: Sriram Rajagopalan <sriramr@arista.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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into workqueue when umount
commit ec084de929e419e51bcdafaafe567d9e7d0273b7 upstream.
synchronize_rcu() didn't wait for call_rcu() callbacks, so inode wb
switch may not go to the workqueue after synchronize_rcu(). Thus
previous scheduled switches was not finished even flushing the
workqueue, which will cause a NULL pointer dereferenced followed below.
VFS: Busy inodes after unmount of vdd. Self-destruct in 5 seconds. Have a nice day...
BUG: unable to handle kernel NULL pointer dereference at 0000000000000278
evict+0xb3/0x180
iput+0x1b0/0x230
inode_switch_wbs_work_fn+0x3c0/0x6a0
worker_thread+0x4e/0x490
? process_one_work+0x410/0x410
kthread+0xe6/0x100
ret_from_fork+0x39/0x50
Replace the synchronize_rcu() call with a rcu_barrier() to wait for all
pending callbacks to finish. And inc isw_nr_in_flight after call_rcu()
in inode_switch_wbs() to make more sense.
Link: http://lkml.kernel.org/r/20190429024108.54150-1-jiufei.xue@linux.alibaba.com
Signed-off-by: Jiufei Xue <jiufei.xue@linux.alibaba.com>
Acked-by: Tejun Heo <tj@kernel.org>
Suggested-by: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7fc5854f8c6efae9e7624970ab49a1eac2faefb1 upstream.
sync_inodes_sb() can race against cgwb (cgroup writeback) membership
switches and fail to writeback some inodes. For example, if an inode
switches to another wb while sync_inodes_sb() is in progress, the new
wb might not be visible to bdi_split_work_to_wbs() at all or the inode
might jump from a wb which hasn't issued writebacks yet to one which
already has.
This patch adds backing_dev_info->wb_switch_rwsem to synchronize cgwb
switch path against sync_inodes_sb() so that sync_inodes_sb() is
guaranteed to see all the target wbs and inodes can't jump wbs to
escape syncing.
v2: Fixed misplaced rwsem init. Spotted by Jiufei.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Jiufei Xue <xuejiufei@gmail.com>
Link: http://lkml.kernel.org/r/dc694ae2-f07f-61e1-7097-7c8411cee12d@gmail.com
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit bfc61c36260ca990937539cd648ede3cd749bc10 upstream.
When finding out which inodes have references on a particular extent, done
by backref.c:iterate_extent_inodes(), from the BTRFS_IOC_LOGICAL_INO (both
v1 and v2) ioctl and from scrub we use the transaction join API to grab a
reference on the currently running transaction, since in order to give
accurate results we need to inspect the delayed references of the currently
running transaction.
However, if there is currently no running transaction, the join operation
will create a new transaction. This is inefficient as the transaction will
eventually be committed, doing unnecessary IO and introducing a potential
point of failure that will lead to a transaction abort due to -ENOSPC, as
recently reported [1].
That's because the join, creates the transaction but does not reserve any
space, so when attempting to update the root item of the root passed to
btrfs_join_transaction(), during the transaction commit, we can end up
failling with -ENOSPC. Users of a join operation are supposed to actually
do some filesystem changes and reserve space by some means, which is not
the case of iterate_extent_inodes(), it is a read-only operation for all
contextes from which it is called.
The reported [1] -ENOSPC failure stack trace is the following:
heisenberg kernel: ------------[ cut here ]------------
heisenberg kernel: BTRFS: Transaction aborted (error -28)
heisenberg kernel: WARNING: CPU: 0 PID: 7137 at fs/btrfs/root-tree.c:136 btrfs_update_root+0x22b/0x320 [btrfs]
(...)
heisenberg kernel: CPU: 0 PID: 7137 Comm: btrfs-transacti Not tainted 4.19.0-4-amd64 #1 Debian 4.19.28-2
heisenberg kernel: Hardware name: FUJITSU LIFEBOOK U757/FJNB2A5, BIOS Version 1.21 03/19/2018
heisenberg kernel: RIP: 0010:btrfs_update_root+0x22b/0x320 [btrfs]
(...)
heisenberg kernel: RSP: 0018:ffffb5448828bd40 EFLAGS: 00010286
heisenberg kernel: RAX: 0000000000000000 RBX: ffff8ed56bccef50 RCX: 0000000000000006
heisenberg kernel: RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff8ed6bda166a0
heisenberg kernel: RBP: 00000000ffffffe4 R08: 00000000000003df R09: 0000000000000007
heisenberg kernel: R10: 0000000000000000 R11: 0000000000000001 R12: ffff8ed63396a078
heisenberg kernel: R13: ffff8ed092d7c800 R14: ffff8ed64f5db028 R15: ffff8ed6bd03d068
heisenberg kernel: FS: 0000000000000000(0000) GS:ffff8ed6bda00000(0000) knlGS:0000000000000000
heisenberg kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
heisenberg kernel: CR2: 00007f46f75f8000 CR3: 0000000310a0a002 CR4: 00000000003606f0
heisenberg kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
heisenberg kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
heisenberg kernel: Call Trace:
heisenberg kernel: commit_fs_roots+0x166/0x1d0 [btrfs]
heisenberg kernel: ? _cond_resched+0x15/0x30
heisenberg kernel: ? btrfs_run_delayed_refs+0xac/0x180 [btrfs]
heisenberg kernel: btrfs_commit_transaction+0x2bd/0x870 [btrfs]
heisenberg kernel: ? start_transaction+0x9d/0x3f0 [btrfs]
heisenberg kernel: transaction_kthread+0x147/0x180 [btrfs]
heisenberg kernel: ? btrfs_cleanup_transaction+0x530/0x530 [btrfs]
heisenberg kernel: kthread+0x112/0x130
heisenberg kernel: ? kthread_bind+0x30/0x30
heisenberg kernel: ret_from_fork+0x35/0x40
heisenberg kernel: ---[ end trace 05de912e30e012d9 ]---
So fix that by using the attach API, which does not create a transaction
when there is currently no running transaction.
[1] https://lore.kernel.org/linux-btrfs/b2a668d7124f1d3e410367f587926f622b3f03a4.camel@scientia.net/
Reported-by: Zygo Blaxell <ce3g8jdj@umail.furryterror.org>
CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 50b29d8f033a7c88c5bc011abc2068b1691ab755 upstream.
Instead of removing EXT4_MOUNT_JOURNAL_CHECKSUM from s_def_mount_opt as
I assume was intended, all other options were blown away leading to
_ext4_show_options() output being incorrect.
Fixes: 1e381f60dad9 ("ext4: do not allow journal_opts for fs w/o journal")
Signed-off-by: Debabrata Banerjee <dbanerje@akamai.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 310a997fd74de778b9a4848a64be9cda9f18764a upstream.
It is never possible, that number of block groups decreases,
since only online grow is supported.
But after a growing occured, we have to zero inode tables
for just created new block groups.
Fixes: 19c5246d2516 ("ext4: add new online resize interface")
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e091eab028f9253eac5c04f9141bbc9d170acab3 upstream.
In some cases, ocfs2_iget() reads the data of inode, which has been
deleted for some reason. That will make the system panic. So We should
judge whether this inode has been deleted, and tell the caller that the
inode is a bad inode.
For example, the ocfs2 is used as the backed of nfs, and the client is
nfsv3. This issue can be reproduced by the following steps.
on the nfs server side,
..../patha/pathb
Step 1: The process A was scheduled before calling the function fh_verify.
Step 2: The process B is removing the 'pathb', and just completed the call
to function dput. Then the dentry of 'pathb' has been deleted from the
dcache, and all ancestors have been deleted also. The relationship of
dentry and inode was deleted through the function hlist_del_init. The
following is the call stack.
dentry_iput->hlist_del_init(&dentry->d_u.d_alias)
At this time, the inode is still in the dcache.
Step 3: The process A call the function ocfs2_get_dentry, which get the
inode from dcache. Then the refcount of inode is 1. The following is the
call stack.
nfsd3_proc_getacl->fh_verify->exportfs_decode_fh->fh_to_dentry(ocfs2_get_dentry)
Step 4: Dirty pages are flushed by bdi threads. So the inode of 'patha'
is evicted, and this directory was deleted. But the inode of 'pathb'
can't be evicted, because the refcount of the inode was 1.
Step 5: The process A keep running, and call the function
reconnect_path(in exportfs_decode_fh), which call function
ocfs2_get_parent of ocfs2. Get the block number of parent
directory(patha) by the name of ... Then read the data from disk by the
block number. But this inode has been deleted, so the system panic.
Process A Process B
1. in nfsd3_proc_getacl |
2. | dput
3. fh_to_dentry(ocfs2_get_dentry) |
4. bdi flush dirty cache |
5. ocfs2_iget |
[283465.542049] OCFS2: ERROR (device sdp): ocfs2_validate_inode_block:
Invalid dinode #580640: OCFS2_VALID_FL not set
[283465.545490] Kernel panic - not syncing: OCFS2: (device sdp): panic forced
after error
[283465.546889] CPU: 5 PID: 12416 Comm: nfsd Tainted: G W
4.1.12-124.18.6.el6uek.bug28762940v3.x86_64 #2
[283465.548382] Hardware name: VMware, Inc. VMware Virtual Platform/440BX
Desktop Reference Platform, BIOS 6.00 09/21/2015
[283465.549657] 0000000000000000 ffff8800a56fb7b8 ffffffff816e839c
ffffffffa0514758
[283465.550392] 000000000008dc20 ffff8800a56fb838 ffffffff816e62d3
0000000000000008
[283465.551056] ffff880000000010 ffff8800a56fb848 ffff8800a56fb7e8
ffff88005df9f000
[283465.551710] Call Trace:
[283465.552516] [<ffffffff816e839c>] dump_stack+0x63/0x81
[283465.553291] [<ffffffff816e62d3>] panic+0xcb/0x21b
[283465.554037] [<ffffffffa04e66b0>] ocfs2_handle_error+0xf0/0xf0 [ocfs2]
[283465.554882] [<ffffffffa04e7737>] __ocfs2_error+0x67/0x70 [ocfs2]
[283465.555768] [<ffffffffa049c0f9>] ocfs2_validate_inode_block+0x229/0x230
[ocfs2]
[283465.556683] [<ffffffffa047bcbc>] ocfs2_read_blocks+0x46c/0x7b0 [ocfs2]
[283465.557408] [<ffffffffa049bed0>] ? ocfs2_inode_cache_io_unlock+0x20/0x20
[ocfs2]
[283465.557973] [<ffffffffa049f0eb>] ocfs2_read_inode_block_full+0x3b/0x60
[ocfs2]
[283465.558525] [<ffffffffa049f5ba>] ocfs2_iget+0x4aa/0x880 [ocfs2]
[283465.559082] [<ffffffffa049146e>] ocfs2_get_parent+0x9e/0x220 [ocfs2]
[283465.559622] [<ffffffff81297c05>] reconnect_path+0xb5/0x300
[283465.560156] [<ffffffff81297f46>] exportfs_decode_fh+0xf6/0x2b0
[283465.560708] [<ffffffffa062faf0>] ? nfsd_proc_getattr+0xa0/0xa0 [nfsd]
[283465.561262] [<ffffffff810a8196>] ? prepare_creds+0x26/0x110
[283465.561932] [<ffffffffa0630860>] fh_verify+0x350/0x660 [nfsd]
[283465.562862] [<ffffffffa0637804>] ? nfsd_cache_lookup+0x44/0x630 [nfsd]
[283465.563697] [<ffffffffa063a8b9>] nfsd3_proc_getattr+0x69/0xf0 [nfsd]
[283465.564510] [<ffffffffa062cf60>] nfsd_dispatch+0xe0/0x290 [nfsd]
[283465.565358] [<ffffffffa05eb892>] ? svc_tcp_adjust_wspace+0x12/0x30
[sunrpc]
[283465.566272] [<ffffffffa05ea652>] svc_process_common+0x412/0x6a0 [sunrpc]
[283465.567155] [<ffffffffa05eaa03>] svc_process+0x123/0x210 [sunrpc]
[283465.568020] [<ffffffffa062c90f>] nfsd+0xff/0x170 [nfsd]
[283465.568962] [<ffffffffa062c810>] ? nfsd_destroy+0x80/0x80 [nfsd]
[283465.570112] [<ffffffff810a622b>] kthread+0xcb/0xf0
[283465.571099] [<ffffffff810a6160>] ? kthread_create_on_node+0x180/0x180
[283465.572114] [<ffffffff816f11b8>] ret_from_fork+0x58/0x90
[283465.573156] [<ffffffff810a6160>] ? kthread_create_on_node+0x180/0x180
Link: http://lkml.kernel.org/r/1554185919-3010-1-git-send-email-sunny.s.zhang@oracle.com
Signed-off-by: Shuning Zhang <sunny.s.zhang@oracle.com>
Reviewed-by: Joseph Qi <jiangqi903@gmail.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: piaojun <piaojun@huawei.com>
Cc: "Gang He" <ghe@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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android-4.4
* origin/upstream-f2fs-stable-linux-4.4.y:
f2fs: link f2fs quota ops for sysfile
Change-Id: Ie1262544e2bc3d4d08e957d4f5e2b2dd98c20190
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
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This patch reverts:
commit fb40d618b039 ("f2fs: don't clear CP_QUOTA_NEED_FSCK_FLAG").
We were missing error handlers used in f2fs quota ops.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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unshared_obb was missing from show_options
bug: 133257717
Change-Id: I1bc49d1b4098052382a518540e5965e037aa39f1
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* refs/heads/tmp-71cb827
Linux 4.4.180
powerpc/lib: fix book3s/32 boot failure due to code patching
powerpc/booke64: set RI in default MSR
drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl
drivers/virt/fsl_hypervisor.c: dereferencing error pointers in ioctl
bonding: fix arp_validate toggling in active-backup mode
ipv4: Fix raw socket lookup for local traffic
vrf: sit mtu should not be updated when vrf netdev is the link
vlan: disable SIOCSHWTSTAMP in container
packet: Fix error path in packet_init
net: ucc_geth - fix Oops when changing number of buffers in the ring
bridge: Fix error path for kobject_init_and_add()
powerpc/64s: Include cpu header
USB: serial: fix unthrottle races
USB: serial: use variable for status
x86/bugs: Change L1TF mitigation string to match upstream
x86/speculation/mds: Fix documentation typo
Documentation: Correct the possible MDS sysfs values
x86/mds: Add MDSUM variant to the MDS documentation
x86/speculation/mds: Add 'mitigations=' support for MDS
x86/speculation: Support 'mitigations=' cmdline option
cpu/speculation: Add 'mitigations=' cmdline option
x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
x86/speculation/mds: Fix comment
x86/speculation/mds: Add SMT warning message
x86/speculation: Move arch_smt_update() call to after mitigation decisions
x86/cpu/bugs: Use __initconst for 'const' init data
Documentation: Add MDS vulnerability documentation
Documentation: Move L1TF to separate directory
x86/speculation/mds: Add mitigation mode VMWERV
x86/speculation/mds: Add sysfs reporting for MDS
x86/speculation/l1tf: Document l1tf in sysfs
x86/speculation/mds: Add mitigation control for MDS
x86/speculation/mds: Conditionally clear CPU buffers on idle entry
x86/speculation/mds: Clear CPU buffers on exit to user
x86/speculation/mds: Add mds_clear_cpu_buffers()
x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
x86/speculation/mds: Add BUG_MSBDS_ONLY
x86/speculation/mds: Add basic bug infrastructure for MDS
x86/speculation: Consolidate CPU whitelists
x86/msr-index: Cleanup bit defines
kvm: x86: Report STIBP on GET_SUPPORTED_CPUID
x86/speculation: Provide IBPB always command line options
x86/speculation: Add seccomp Spectre v2 user space protection mode
x86/speculation: Enable prctl mode for spectre_v2_user
x86/speculation: Add prctl() control for indirect branch speculation
x86/speculation: Prevent stale SPEC_CTRL msr content
x86/speculation: Prepare arch_smt_update() for PRCTL mode
x86/speculation: Split out TIF update
x86/speculation: Prepare for conditional IBPB in switch_mm()
x86/speculation: Avoid __switch_to_xtra() calls
x86/process: Consolidate and simplify switch_to_xtra() code
x86/speculation: Prepare for per task indirect branch speculation control
x86/speculation: Add command line control for indirect branch speculation
x86/speculation: Unify conditional spectre v2 print functions
x86/speculataion: Mark command line parser data __initdata
x86/speculation: Mark string arrays const correctly
x86/speculation: Reorder the spec_v2 code
x86/speculation: Rework SMT state change
sched: Add sched_smt_active()
x86/Kconfig: Select SCHED_SMT if SMP enabled
x86/speculation: Reorganize speculation control MSRs update
x86/speculation: Rename SSBD update functions
x86/speculation: Disable STIBP when enhanced IBRS is in use
x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common()
x86/speculation: Remove unnecessary ret variable in cpu_show_common()
x86/speculation: Clean up spectre_v2_parse_cmdline()
x86/speculation: Update the TIF_SSBD comment
x86/speculation: Propagate information about RSB filling mitigation to sysfs
x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
x86/mm: Use WRITE_ONCE() when setting PTEs
KVM: x86: SVM: Call x86_spec_ctrl_set_guest/host() with interrupts disabled
x86/cpu: Sanitize FAM6_ATOM naming
x86/microcode: Update the new microcode revision unconditionally
x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation
x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file
x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
x86/bugs: Add AMD's SPEC_CTRL MSR usage
x86/bugs: Add AMD's variant of SSB_NO
x86/speculation: Simplify the CPU bug detection logic
x86/speculation: Support Enhanced IBRS on future CPUs
x86/cpufeatures: Hide AMD-specific speculation flags
x86/MCE: Save microcode revision in machine check records
x86/microcode/intel: Check microcode revision before updating sibling threads
bitops: avoid integer overflow in GENMASK(_ULL)
x86: stop exporting msr-index.h to userland
x86/microcode/intel: Add a helper which gives the microcode revision
locking/static_keys: Provide DECLARE and well as DEFINE macros
Don't jump to compute_result state from check_result state
x86/vdso: Pass --eh-frame-hdr to the linker
cw1200: fix missing unlock on error in cw1200_hw_scan()
gpu: ipu-v3: dp: fix CSC handling
selftests/net: correct the return value for run_netsocktests
s390: ctcm: fix ctcm_new_device error return code
ipvs: do not schedule icmp errors from tunnels
init: initialize jump labels before command line option parsing
tools lib traceevent: Fix missing equality check for strcmp
KVM: x86: avoid misreporting level-triggered irqs as edge-triggered in tracing
s390/3270: fix lockdep false positive on view->lock
s390/dasd: Fix capacity calculation for large volumes
libnvdimm/btt: Fix a kmemdup failure check
HID: input: add mapping for keyboard Brightness Up/Down/Toggle keys
HID: input: add mapping for Expose/Overview key
iio: adc: xilinx: fix potential use-after-free on remove
platform/x86: sony-laptop: Fix unintentional fall-through
netfilter: compat: initialize all fields in xt_init
timer/debug: Change /proc/timer_stats from 0644 to 0600
ASoC: Intel: avoid Oops if DMA setup fails
ipv6: fix a potential deadlock in do_ipv6_setsockopt()
UAS: fix alignment of scatter/gather segments
Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
Bluetooth: hidp: fix buffer overflow
scsi: qla2xxx: Fix incorrect region-size setting in optrom SYSFS routines
usb: dwc3: Fix default lpm_nyet_threshold value
genirq: Prevent use-after-free and work list corruption
iommu/amd: Set exclusion range correctly
scsi: csiostor: fix missing data copy in csio_scsi_err_handler()
perf/x86/intel: Fix handling of wakeup_events for multi-entry PEBS
ASoC: tlv320aic32x4: Fix Common Pins
ASoC: cs4270: Set auto-increment bit for register writes
ASoC:soc-pcm:fix a codec fixup issue in TDM case
scsi: libsas: fix a race condition when smp task timeout
media: v4l2: i2c: ov7670: Fix PLL bypass register values
x86/mce: Improve error message when kernel cannot recover, p2
selinux: never allow relabeling on context mounts
Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ
staging: iio: adt7316: fix the dac write calculation
staging: iio: adt7316: fix the dac read calculation
staging: iio: adt7316: allow adt751x to use internal vref for all dacs
usb: usbip: fix isoc packet num validation in get_pipe
ARM: iop: don't use using 64-bit DMA masks
ARM: orion: don't use using 64-bit DMA masks
xsysace: Fix error handling in ace_setup
hugetlbfs: fix memory leak for resv_map
net: hns: Fix WARNING when remove HNS driver with SMMU enabled
net: hns: Use NAPI_POLL_WEIGHT for hns driver
scsi: storvsc: Fix calculation of sub-channel count
vfio/pci: use correct format characters
rtc: da9063: set uie_unsupported when relevant
debugfs: fix use-after-free on symlink traversal
jffs2: fix use-after-free on symlink traversal
bonding: show full hw address in sysfs for slave entries
igb: Fix WARN_ONCE on runtime suspend
rtc: sh: Fix invalid alarm warning for non-enabled alarm
HID: debug: fix race condition with between rdesc_show() and device removal
USB: core: Fix bug caused by duplicate interface PM usage counter
USB: core: Fix unterminated string returned by usb_string()
USB: w1 ds2490: Fix bug caused by improper use of altsetting array
USB: yurex: Fix protection fault after device removal
packet: validate msg_namelen in send directly
bnxt_en: Improve multicast address setup logic.
ipv6: invert flowlabel sharing check in process and user mode
ipv6/flowlabel: wait rcu grace period before put_pid()
ipv4: ip_do_fragment: Preserve skb_iif during fragmentation
ALSA: line6: use dynamic buffers
vfio/type1: Limit DMA mappings per container
kconfig/[mn]conf: handle backspace (^H) key
libata: fix using DMA buffers on stack
scsi: zfcp: reduce flood of fcrscn1 trace records on multi-element RSCN
ceph: fix use-after-free on symlink traversal
usb: u132-hcd: fix resource leak
scsi: qla4xxx: fix a potential NULL pointer dereference
net: ethernet: ti: fix possible object reference leak
net: ibm: fix possible object reference leak
net: xilinx: fix possible object reference leak
net: ks8851: Set initial carrier state to down
net: ks8851: Delay requesting IRQ until opened
net: ks8851: Reassert reset pin if chip ID check fails
net: ks8851: Dequeue RX packets explicitly
ARM: dts: pfla02: increase phy reset duration
usb: gadget: net2272: Fix net2272_dequeue()
usb: gadget: net2280: Fix net2280_dequeue()
usb: gadget: net2280: Fix overrun of OUT messages
sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init()
netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING
qlcnic: Avoid potential NULL pointer dereference
usbnet: ipheth: fix potential null pointer dereference in ipheth_carrier_set
usbnet: ipheth: prevent TX queue timeouts when device not ready
Documentation: Add nospectre_v1 parameter
powerpc/fsl: Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg
powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'
powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms
powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)
powerpc/fsl: Emulate SPRN_BUCSR register
powerpc/fsl: Flush branch predictor when entering KVM
powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used
ipv4: set the tcp_min_rtt_wlen range from 0 to one day
net: stmmac: move stmmac_check_ether_addr() to driver probe
team: fix possible recursive locking when add slaves
ipv4: add sanity checks in ipv4_link_failure()
Revert "block/loop: Use global lock for ioctl() operation."
bpf: reject wrong sized filters earlier
tipc: check link name with right length in tipc_nl_compat_link_set
tipc: check bearer name with right length in tipc_nl_compat_bearer_enable
netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON
NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
intel_th: gth: Fix an off-by-one in output unassigning
slip: make slhc_free() silently accept an error pointer
tipc: handle the err returned from cmd header function
powerpc/fsl: Fix the flush of branch predictor.
powerpc/security: Fix spectre_v2 reporting
powerpc/fsl: Update Spectre v2 reporting
powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)
powerpc/fsl: Add nospectre_v2 command line argument
powerpc/fsl: Fix spectre_v2 mitigations reporting
powerpc/fsl: Add macro to flush the branch predictor
powerpc/fsl: Add infrastructure to fixup branch predictor flush
powerpc: Avoid code patching freed init sections
powerpc/powernv: Query firmware for count cache flush settings
powerpc/pseries: Query hypervisor for count cache flush settings
powerpc/64s: Add support for software count cache flush
powerpc/64s: Add new security feature flags for count cache flush
powerpc/asm: Add a patch_site macro & helpers for patching instructions
powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E
powerpc/64: Make meltdown reporting Book3S 64 specific
powerpc/64: Call setup_barrier_nospec() from setup_arch()
powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC
powerpc/64: Make stf barrier PPC_BOOK3S_64 specific.
powerpc/64: Disable the speculation barrier from the command line
powerpc64s: Show ori31 availability in spectre_v1 sysfs file not v2
powerpc/64s: Enhance the information in cpu_show_spectre_v1()
powerpc: Use barrier_nospec in copy_from_user()
powerpc/64: Use barrier_nospec in syscall entry
powerpc/64s: Enable barrier_nospec based on firmware settings
powerpc/64s: Patch barrier_nospec in modules
powerpc/64s: Add support for ori barrier_nospec patching
powerpc/64s: Add barrier_nospec
powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit
powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()
powerpc/pseries: Restore default security feature flags on setup
powerpc: Move default security feature flags
powerpc/pseries: Fix clearing of security feature flags
powerpc/64s: Wire up cpu_show_spectre_v2()
powerpc/64s: Wire up cpu_show_spectre_v1()
powerpc/pseries: Use the security flags in pseries_setup_rfi_flush()
powerpc/powernv: Use the security flags in pnv_setup_rfi_flush()
powerpc/64s: Enhance the information in cpu_show_meltdown()
powerpc/64s: Move cpu_show_meltdown()
powerpc/powernv: Set or clear security feature flags
powerpc/pseries: Set or clear security feature flags
powerpc: Add security feature flags for Spectre/Meltdown
powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration
powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags
powerpc/rfi-flush: Differentiate enabled and patched flush types
powerpc/rfi-flush: Always enable fallback flush on pseries
powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again
powerpc/rfi-flush: Move the logic to avoid a redo into the debugfs code
powerpc/powernv: Support firmware disable of RFI flush
powerpc/pseries: Support firmware disable of RFI flush
powerpc/64s: Improve RFI L1-D cache flush fallback
powerpc/xmon: Add RFI flush related fields to paca dump
USB: Consolidate LPM checks to avoid enabling LPM twice
USB: Add new USB LPM helpers
sunrpc: don't mark uninitialised items as VALID.
nfsd: Don't release the callback slot unless it was actually held
ceph: fix ci->i_head_snapc leak
ceph: ensure d_name stability in ceph_dentry_hash()
sched/numa: Fix a possible divide-by-zero
trace: Fix preempt_enable_no_resched() abuse
MIPS: scall64-o32: Fix indirect syscall number load
cifs: do not attempt cifs operation on smb2+ rename error
KVM: fail KVM_SET_VCPU_EVENTS with invalid exception number
kbuild: simplify ld-option implementation
ANDROID: cuttlefish_defconfig: Disable DEVTMPFS
ANDROID: Move from clang r349610 to r353983c.
f2fs: fix to avoid accessing xattr across the boundary
f2fs: fix to avoid potential race on sbi->unusable_block_count access/update
f2fs: add tracepoint for f2fs_filemap_fault()
f2fs: introduce DATA_GENERIC_ENHANCE
f2fs: fix to handle error in f2fs_disable_checkpoint()
f2fs: remove redundant check in f2fs_file_write_iter()
f2fs: fix to be aware of readonly device in write_checkpoint()
f2fs: fix to skip recovery on readonly device
f2fs: fix to consider multiple device for readonly check
f2fs: relocate chksum_offset for large_nat_bitmap feature
f2fs: allow unfixed f2fs_checkpoint.checksum_offset
f2fs: Replace spaces with tab
f2fs: insert space before the open parenthesis '('
f2fs: allow address pointer number of dnode aligning to specified size
f2fs: introduce f2fs_read_single_page() for cleanup
f2fs: mark is_extension_exist() inline
f2fs: fix to set FI_UPDATE_WRITE correctly
f2fs: fix to avoid panic in f2fs_inplace_write_data()
f2fs: fix to do sanity check on valid block count of segment
f2fs: fix to do sanity check on valid node/block count
f2fs: fix to avoid panic in do_recover_data()
f2fs: fix to do sanity check on free nid
f2fs: fix to do checksum even if inode page is uptodate
f2fs: fix to avoid panic in f2fs_remove_inode_page()
f2fs: fix to clear dirty inode in error path of f2fs_iget()
f2fs: remove new blank line of f2fs kernel message
f2fs: fix wrong __is_meta_io() macro
f2fs: fix to avoid panic in dec_valid_node_count()
f2fs: fix to avoid panic in dec_valid_block_count()
f2fs: fix to use inline space only if inline_xattr is enable
f2fs: fix to retrieve inline xattr space
f2fs: fix error path of recovery
f2fs: fix to avoid deadloop in foreground GC
f2fs: data: fix warning Using plain integer as NULL pointer
f2fs: add tracepoint for f2fs_file_write_iter()
f2fs: add comment for conditional compilation statement
f2fs: fix potential recursive call when enabling data_flush
f2fs: improve discard handling with multi-device volumes
f2fs: Reduce zoned block device memory usage
f2fs: Fix use of number of devices
Sleepable function handle_lmk_event() is called in atomic context,
so ignored the commit "ANDROID: Communicates LMK events to userland
where they can be logged"
Conflicts:
arch/powerpc/include/asm/uaccess.h
kernel/cpu.c
kernel/irq/manage.c
kernel/time/timer_stats.c
net/ipv4/sysctl_net_ipv4.c
Change-Id: I3e5bd447057b44a28fc5000403198ae0fd644480
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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Changes in 4.4.180
kbuild: simplify ld-option implementation
KVM: fail KVM_SET_VCPU_EVENTS with invalid exception number
cifs: do not attempt cifs operation on smb2+ rename error
MIPS: scall64-o32: Fix indirect syscall number load
trace: Fix preempt_enable_no_resched() abuse
sched/numa: Fix a possible divide-by-zero
ceph: ensure d_name stability in ceph_dentry_hash()
ceph: fix ci->i_head_snapc leak
nfsd: Don't release the callback slot unless it was actually held
sunrpc: don't mark uninitialised items as VALID.
USB: Add new USB LPM helpers
USB: Consolidate LPM checks to avoid enabling LPM twice
powerpc/xmon: Add RFI flush related fields to paca dump
powerpc/64s: Improve RFI L1-D cache flush fallback
powerpc/pseries: Support firmware disable of RFI flush
powerpc/powernv: Support firmware disable of RFI flush
powerpc/rfi-flush: Move the logic to avoid a redo into the debugfs code
powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again
powerpc/rfi-flush: Always enable fallback flush on pseries
powerpc/rfi-flush: Differentiate enabled and patched flush types
powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags
powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration
powerpc: Add security feature flags for Spectre/Meltdown
powerpc/pseries: Set or clear security feature flags
powerpc/powernv: Set or clear security feature flags
powerpc/64s: Move cpu_show_meltdown()
powerpc/64s: Enhance the information in cpu_show_meltdown()
powerpc/powernv: Use the security flags in pnv_setup_rfi_flush()
powerpc/pseries: Use the security flags in pseries_setup_rfi_flush()
powerpc/64s: Wire up cpu_show_spectre_v1()
powerpc/64s: Wire up cpu_show_spectre_v2()
powerpc/pseries: Fix clearing of security feature flags
powerpc: Move default security feature flags
powerpc/pseries: Restore default security feature flags on setup
powerpc/64s: Fix section mismatch warnings from setup_rfi_flush()
powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit
powerpc/64s: Add barrier_nospec
powerpc/64s: Add support for ori barrier_nospec patching
powerpc/64s: Patch barrier_nospec in modules
powerpc/64s: Enable barrier_nospec based on firmware settings
powerpc/64: Use barrier_nospec in syscall entry
powerpc: Use barrier_nospec in copy_from_user()
powerpc/64s: Enhance the information in cpu_show_spectre_v1()
powerpc64s: Show ori31 availability in spectre_v1 sysfs file not v2
powerpc/64: Disable the speculation barrier from the command line
powerpc/64: Make stf barrier PPC_BOOK3S_64 specific.
powerpc/64: Add CONFIG_PPC_BARRIER_NOSPEC
powerpc/64: Call setup_barrier_nospec() from setup_arch()
powerpc/64: Make meltdown reporting Book3S 64 specific
powerpc/fsl: Add barrier_nospec implementation for NXP PowerPC Book3E
powerpc/asm: Add a patch_site macro & helpers for patching instructions
powerpc/64s: Add new security feature flags for count cache flush
powerpc/64s: Add support for software count cache flush
powerpc/pseries: Query hypervisor for count cache flush settings
powerpc/powernv: Query firmware for count cache flush settings
powerpc: Avoid code patching freed init sections
powerpc/fsl: Add infrastructure to fixup branch predictor flush
powerpc/fsl: Add macro to flush the branch predictor
powerpc/fsl: Fix spectre_v2 mitigations reporting
powerpc/fsl: Add nospectre_v2 command line argument
powerpc/fsl: Flush the branch predictor at each kernel entry (64bit)
powerpc/fsl: Update Spectre v2 reporting
powerpc/security: Fix spectre_v2 reporting
powerpc/fsl: Fix the flush of branch predictor.
tipc: handle the err returned from cmd header function
slip: make slhc_free() silently accept an error pointer
intel_th: gth: Fix an off-by-one in output unassigning
fs/proc/proc_sysctl.c: Fix a NULL pointer dereference
NFS: Forbid setting AF_INET6 to "struct sockaddr_in"->sin_family.
netfilter: ebtables: CONFIG_COMPAT: drop a bogus WARN_ON
tipc: check bearer name with right length in tipc_nl_compat_bearer_enable
tipc: check link name with right length in tipc_nl_compat_link_set
bpf: reject wrong sized filters earlier
Revert "block/loop: Use global lock for ioctl() operation."
ipv4: add sanity checks in ipv4_link_failure()
team: fix possible recursive locking when add slaves
net: stmmac: move stmmac_check_ether_addr() to driver probe
ipv4: set the tcp_min_rtt_wlen range from 0 to one day
powerpc/fsl: Enable runtime patching if nospectre_v2 boot arg is used
powerpc/fsl: Flush branch predictor when entering KVM
powerpc/fsl: Emulate SPRN_BUCSR register
powerpc/fsl: Flush the branch predictor at each kernel entry (32 bit)
powerpc/fsl: Sanitize the syscall table for NXP PowerPC 32 bit platforms
powerpc/fsl: Fixed warning: orphan section `__btb_flush_fixup'
powerpc/fsl: Add FSL_PPC_BOOK3E as supported arch for nospectre_v2 boot arg
Documentation: Add nospectre_v1 parameter
usbnet: ipheth: prevent TX queue timeouts when device not ready
usbnet: ipheth: fix potential null pointer dereference in ipheth_carrier_set
qlcnic: Avoid potential NULL pointer dereference
netfilter: bridge: set skb transport_header before entering NF_INET_PRE_ROUTING
sc16is7xx: missing unregister/delete driver on error in sc16is7xx_init()
usb: gadget: net2280: Fix overrun of OUT messages
usb: gadget: net2280: Fix net2280_dequeue()
usb: gadget: net2272: Fix net2272_dequeue()
ARM: dts: pfla02: increase phy reset duration
net: ks8851: Dequeue RX packets explicitly
net: ks8851: Reassert reset pin if chip ID check fails
net: ks8851: Delay requesting IRQ until opened
net: ks8851: Set initial carrier state to down
net: xilinx: fix possible object reference leak
net: ibm: fix possible object reference leak
net: ethernet: ti: fix possible object reference leak
scsi: qla4xxx: fix a potential NULL pointer dereference
usb: u132-hcd: fix resource leak
ceph: fix use-after-free on symlink traversal
scsi: zfcp: reduce flood of fcrscn1 trace records on multi-element RSCN
libata: fix using DMA buffers on stack
kconfig/[mn]conf: handle backspace (^H) key
vfio/type1: Limit DMA mappings per container
ALSA: line6: use dynamic buffers
ipv4: ip_do_fragment: Preserve skb_iif during fragmentation
ipv6/flowlabel: wait rcu grace period before put_pid()
ipv6: invert flowlabel sharing check in process and user mode
bnxt_en: Improve multicast address setup logic.
packet: validate msg_namelen in send directly
USB: yurex: Fix protection fault after device removal
USB: w1 ds2490: Fix bug caused by improper use of altsetting array
USB: core: Fix unterminated string returned by usb_string()
USB: core: Fix bug caused by duplicate interface PM usage counter
HID: debug: fix race condition with between rdesc_show() and device removal
rtc: sh: Fix invalid alarm warning for non-enabled alarm
igb: Fix WARN_ONCE on runtime suspend
bonding: show full hw address in sysfs for slave entries
jffs2: fix use-after-free on symlink traversal
debugfs: fix use-after-free on symlink traversal
rtc: da9063: set uie_unsupported when relevant
vfio/pci: use correct format characters
scsi: storvsc: Fix calculation of sub-channel count
net: hns: Use NAPI_POLL_WEIGHT for hns driver
net: hns: Fix WARNING when remove HNS driver with SMMU enabled
hugetlbfs: fix memory leak for resv_map
xsysace: Fix error handling in ace_setup
ARM: orion: don't use using 64-bit DMA masks
ARM: iop: don't use using 64-bit DMA masks
usb: usbip: fix isoc packet num validation in get_pipe
staging: iio: adt7316: allow adt751x to use internal vref for all dacs
staging: iio: adt7316: fix the dac read calculation
staging: iio: adt7316: fix the dac write calculation
Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ
selinux: never allow relabeling on context mounts
x86/mce: Improve error message when kernel cannot recover, p2
media: v4l2: i2c: ov7670: Fix PLL bypass register values
scsi: libsas: fix a race condition when smp task timeout
ASoC:soc-pcm:fix a codec fixup issue in TDM case
ASoC: cs4270: Set auto-increment bit for register writes
ASoC: tlv320aic32x4: Fix Common Pins
perf/x86/intel: Fix handling of wakeup_events for multi-entry PEBS
scsi: csiostor: fix missing data copy in csio_scsi_err_handler()
iommu/amd: Set exclusion range correctly
genirq: Prevent use-after-free and work list corruption
usb: dwc3: Fix default lpm_nyet_threshold value
scsi: qla2xxx: Fix incorrect region-size setting in optrom SYSFS routines
Bluetooth: hidp: fix buffer overflow
Bluetooth: Align minimum encryption key size for LE and BR/EDR connections
UAS: fix alignment of scatter/gather segments
ipv6: fix a potential deadlock in do_ipv6_setsockopt()
ASoC: Intel: avoid Oops if DMA setup fails
timer/debug: Change /proc/timer_stats from 0644 to 0600
netfilter: compat: initialize all fields in xt_init
platform/x86: sony-laptop: Fix unintentional fall-through
iio: adc: xilinx: fix potential use-after-free on remove
HID: input: add mapping for Expose/Overview key
HID: input: add mapping for keyboard Brightness Up/Down/Toggle keys
libnvdimm/btt: Fix a kmemdup failure check
s390/dasd: Fix capacity calculation for large volumes
s390/3270: fix lockdep false positive on view->lock
KVM: x86: avoid misreporting level-triggered irqs as edge-triggered in tracing
tools lib traceevent: Fix missing equality check for strcmp
init: initialize jump labels before command line option parsing
ipvs: do not schedule icmp errors from tunnels
s390: ctcm: fix ctcm_new_device error return code
selftests/net: correct the return value for run_netsocktests
gpu: ipu-v3: dp: fix CSC handling
cw1200: fix missing unlock on error in cw1200_hw_scan()
x86/vdso: Pass --eh-frame-hdr to the linker
Don't jump to compute_result state from check_result state
locking/static_keys: Provide DECLARE and well as DEFINE macros
x86/microcode/intel: Add a helper which gives the microcode revision
x86: stop exporting msr-index.h to userland
bitops: avoid integer overflow in GENMASK(_ULL)
x86/microcode/intel: Check microcode revision before updating sibling threads
x86/MCE: Save microcode revision in machine check records
x86/cpufeatures: Hide AMD-specific speculation flags
x86/speculation: Support Enhanced IBRS on future CPUs
x86/speculation: Simplify the CPU bug detection logic
x86/bugs: Add AMD's variant of SSB_NO
x86/bugs: Add AMD's SPEC_CTRL MSR usage
x86/bugs: Switch the selection of mitigation from CPU vendor to CPU features
locking/atomics, asm-generic: Move some macros from <linux/bitops.h> to a new <linux/bits.h> file
x86/bugs: Fix the AMD SSBD usage of the SPEC_CTRL MSR
x86/speculation: Remove SPECTRE_V2_IBRS in enum spectre_v2_mitigation
x86/microcode: Make sure boot_cpu_data.microcode is up-to-date
x86/microcode: Update the new microcode revision unconditionally
x86/cpu: Sanitize FAM6_ATOM naming
KVM: x86: SVM: Call x86_spec_ctrl_set_guest/host() with interrupts disabled
x86/mm: Use WRITE_ONCE() when setting PTEs
x86/speculation: Apply IBPB more strictly to avoid cross-process data leak
x86/speculation: Enable cross-hyperthread spectre v2 STIBP mitigation
x86/speculation: Propagate information about RSB filling mitigation to sysfs
x86/speculation: Update the TIF_SSBD comment
x86/speculation: Clean up spectre_v2_parse_cmdline()
x86/speculation: Remove unnecessary ret variable in cpu_show_common()
x86/speculation: Move STIPB/IBPB string conditionals out of cpu_show_common()
x86/speculation: Disable STIBP when enhanced IBRS is in use
x86/speculation: Rename SSBD update functions
x86/speculation: Reorganize speculation control MSRs update
x86/Kconfig: Select SCHED_SMT if SMP enabled
sched: Add sched_smt_active()
x86/speculation: Rework SMT state change
x86/speculation: Reorder the spec_v2 code
x86/speculation: Mark string arrays const correctly
x86/speculataion: Mark command line parser data __initdata
x86/speculation: Unify conditional spectre v2 print functions
x86/speculation: Add command line control for indirect branch speculation
x86/speculation: Prepare for per task indirect branch speculation control
x86/process: Consolidate and simplify switch_to_xtra() code
x86/speculation: Avoid __switch_to_xtra() calls
x86/speculation: Prepare for conditional IBPB in switch_mm()
x86/speculation: Split out TIF update
x86/speculation: Prepare arch_smt_update() for PRCTL mode
x86/speculation: Prevent stale SPEC_CTRL msr content
x86/speculation: Add prctl() control for indirect branch speculation
x86/speculation: Enable prctl mode for spectre_v2_user
x86/speculation: Add seccomp Spectre v2 user space protection mode
x86/speculation: Provide IBPB always command line options
kvm: x86: Report STIBP on GET_SUPPORTED_CPUID
x86/msr-index: Cleanup bit defines
x86/speculation: Consolidate CPU whitelists
x86/speculation/mds: Add basic bug infrastructure for MDS
x86/speculation/mds: Add BUG_MSBDS_ONLY
x86/kvm: Expose X86_FEATURE_MD_CLEAR to guests
x86/speculation/mds: Add mds_clear_cpu_buffers()
x86/speculation/mds: Clear CPU buffers on exit to user
x86/speculation/mds: Conditionally clear CPU buffers on idle entry
x86/speculation/mds: Add mitigation control for MDS
x86/speculation/l1tf: Document l1tf in sysfs
x86/speculation/mds: Add sysfs reporting for MDS
x86/speculation/mds: Add mitigation mode VMWERV
Documentation: Move L1TF to separate directory
Documentation: Add MDS vulnerability documentation
x86/cpu/bugs: Use __initconst for 'const' init data
x86/speculation: Move arch_smt_update() call to after mitigation decisions
x86/speculation/mds: Add SMT warning message
x86/speculation/mds: Fix comment
x86/speculation/mds: Print SMT vulnerable on MSBDS with mitigations off
cpu/speculation: Add 'mitigations=' cmdline option
x86/speculation: Support 'mitigations=' cmdline option
x86/speculation/mds: Add 'mitigations=' support for MDS
x86/mds: Add MDSUM variant to the MDS documentation
Documentation: Correct the possible MDS sysfs values
x86/speculation/mds: Fix documentation typo
x86/bugs: Change L1TF mitigation string to match upstream
USB: serial: use variable for status
USB: serial: fix unthrottle races
powerpc/64s: Include cpu header
bridge: Fix error path for kobject_init_and_add()
net: ucc_geth - fix Oops when changing number of buffers in the ring
packet: Fix error path in packet_init
vlan: disable SIOCSHWTSTAMP in container
vrf: sit mtu should not be updated when vrf netdev is the link
ipv4: Fix raw socket lookup for local traffic
bonding: fix arp_validate toggling in active-backup mode
drivers/virt/fsl_hypervisor.c: dereferencing error pointers in ioctl
drivers/virt/fsl_hypervisor.c: prevent integer overflow in ioctl
powerpc/booke64: set RI in default MSR
powerpc/lib: fix book3s/32 boot failure due to code patching
Linux 4.4.180
Change-Id: If2d2fdd451b55c002666b32022b269cec9545607
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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[ Upstream commit 58b6e5e8f1addd44583d61b0a03c0f5519527e35 ]
When mknod is used to create a block special file in hugetlbfs, it will
allocate an inode and kmalloc a 'struct resv_map' via resv_map_alloc().
inode->i_mapping->private_data will point the newly allocated resv_map.
However, when the device special file is opened bd_acquire() will set
inode->i_mapping to bd_inode->i_mapping. Thus the pointer to the
allocated resv_map is lost and the structure is leaked.
Programs to reproduce:
mount -t hugetlbfs nodev hugetlbfs
mknod hugetlbfs/dev b 0 0
exec 30<> hugetlbfs/dev
umount hugetlbfs/
resv_map structures are only needed for inodes which can have associated
page allocations. To fix the leak, only allocate resv_map for those
inodes which could possibly be associated with page allocations.
Link: http://lkml.kernel.org/r/20190401213101.16476-1-mike.kravetz@oracle.com
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Yufen Yu <yuyufen@huawei.com>
Suggested-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 93b919da64c15b90953f96a536e5e61df896ca57 ]
symlink body shouldn't be freed without an RCU delay. Switch debugfs to
->destroy_inode() and use of call_rcu(); free both the inode and symlink
body in the callback. Similar to solution for bpf, only here it's even
more obvious that ->evict_inode() can be dropped.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit 4fdcfab5b5537c21891e22e65996d4d0dd8ab4ca ]
free the symlink body after the same RCU delay we have for freeing the
struct inode itself, so that traversal during RCU pathwalk wouldn't step
into freed memory.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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[ Upstream commit daf5cc27eed99afdea8d96e71b89ba41f5406ef6 ]
free the symlink body after the same RCU delay we have for freeing the
struct inode itself, so that traversal during RCU pathwalk wouldn't step
into freed memory.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
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commit 7c2bd9a39845bfb6d72ddb55ce737650271f6f96 upstream.
syzbot is reporting uninitialized value at rpc_sockaddr2uaddr() [1]. This
is because syzbot is setting AF_INET6 to "struct sockaddr_in"->sin_family
(which is embedded into user-visible "struct nfs_mount_data" structure)
despite nfs23_validate_mount_data() cannot pass sizeof(struct sockaddr_in6)
bytes of AF_INET6 address to rpc_sockaddr2uaddr().
Since "struct nfs_mount_data" structure is user-visible, we can't change
"struct nfs_mount_data" to use "struct sockaddr_storage". Therefore,
assuming that everybody is using AF_INET family when passing address via
"struct nfs_mount_data"->addr, reject if its sin_family is not AF_INET.
[1] https://syzkaller.appspot.com/bug?id=599993614e7cbbf66bc2656a919ab2a95fb5d75c
Reported-by: syzbot <syzbot+047a11c361b872896a4f@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 89189557b47b35683a27c80ee78aef18248eefb4 upstream.
Syzkaller report this:
sysctl could not get directory: /net//bridge -12
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN PTI
CPU: 1 PID: 7027 Comm: syz-executor.0 Tainted: G C 5.1.0-rc3+ #8
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline]
RIP: 0010:__rb_change_child include/linux/rbtree_augmented.h:144 [inline]
RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:186 [inline]
RIP: 0010:rb_erase+0x5f4/0x19f0 lib/rbtree.c:459
Code: 00 0f 85 60 13 00 00 48 89 1a 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 75 0c 00 00 4d 85 ed 4c 89 2e 74 ce 4c 89 ea 48
RSP: 0018:ffff8881bb507778 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffff8881f224b5b8 RCX: ffffffff818f3f6a
RDX: 000000000000000a RSI: 0000000000000050 RDI: ffff8881f224b568
RBP: 0000000000000000 R08: ffffed10376a0ef4 R09: ffffed10376a0ef4
R10: 0000000000000001 R11: ffffed10376a0ef4 R12: ffff8881f224b558
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 00007f3e7ce13700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd60fbe9398 CR3: 00000001cb55c001 CR4: 00000000007606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
PKRU: 55555554
Call Trace:
erase_entry fs/proc/proc_sysctl.c:178 [inline]
erase_header+0xe3/0x160 fs/proc/proc_sysctl.c:207
start_unregistering fs/proc/proc_sysctl.c:331 [inline]
drop_sysctl_table+0x558/0x880 fs/proc/proc_sysctl.c:1631
get_subdir fs/proc/proc_sysctl.c:1022 [inline]
__register_sysctl_table+0xd65/0x1090 fs/proc/proc_sysctl.c:1335
br_netfilter_init+0x68/0x1000 [br_netfilter]
do_one_initcall+0xbc/0x47d init/main.c:901
do_init_module+0x1b5/0x547 kernel/module.c:3456
load_module+0x6405/0x8c10 kernel/module.c:3804
__do_sys_finit_module+0x162/0x190 kernel/module.c:3898
do_syscall_64+0x9f/0x450 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Modules linked in: br_netfilter(+) backlight comedi(C) hid_sensor_hub max3100 ti_ads8688 udc_core fddi snd_mona leds_gpio rc_streamzap mtd pata_netcell nf_log_common rc_winfast udp_tunnel snd_usbmidi_lib snd_usb_toneport snd_usb_line6 snd_rawmidi snd_seq_device snd_hwdep videobuf2_v4l2 videobuf2_common videodev media videobuf2_vmalloc videobuf2_memops rc_gadmei_rm008z 8250_of smm665 hid_tmff hid_saitek hwmon_vid rc_ati_tv_wonder_hd_600 rc_core pata_pdc202xx_old dn_rtmsg as3722 ad714x_i2c ad714x snd_soc_cs4265 hid_kensington panel_ilitek_ili9322 drm drm_panel_orientation_quirks ipack cdc_phonet usbcore phonet hid_jabra hid extcon_arizona can_dev industrialio_triggered_buffer kfifo_buf industrialio adm1031 i2c_mux_ltc4306 i2c_mux ipmi_msghandler mlxsw_core snd_soc_cs35l34 snd_soc_core snd_pcm_dmaengine snd_pcm snd_timer ac97_bus snd_compress snd soundcore gpio_da9055 uio ecdh_generic mdio_thunder of_mdio fixed_phy libphy mdio_cavium iptable_security iptable_raw iptable_mangle
iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_filter bpfilter ip6_vti ip_vti ip_gre ipip sit tunnel4 ip_tunnel hsr veth netdevsim vxcan batman_adv cfg80211 rfkill chnl_net caif nlmon dummy team bonding vcan bridge stp llc ip6_gre gre ip6_tunnel tunnel6 tun joydev mousedev ppdev tpm kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel ide_pci_generic piix aes_x86_64 crypto_simd cryptd ide_core glue_helper input_leds psmouse intel_agp intel_gtt serio_raw ata_generic i2c_piix4 agpgart pata_acpi parport_pc parport floppy rtc_cmos sch_fq_codel ip_tables x_tables sha1_ssse3 sha1_generic ipv6 [last unloaded: br_netfilter]
Dumping ftrace buffer:
(ftrace buffer empty)
---[ end trace 68741688d5fbfe85 ]---
commit 23da9588037e ("fs/proc/proc_sysctl.c: fix NULL pointer
dereference in put_links") forgot to handle start_unregistering() case,
while header->parent is NULL, it calls erase_header() and as seen in the
above syzkaller call trace, accessing &header->parent->root will trigger
a NULL pointer dereference.
As that commit explained, there is also no need to call
start_unregistering() if header->parent is NULL.
Link: http://lkml.kernel.org/r/20190409153622.28112-1-yuehaibing@huawei.com
Fixes: 23da9588037e ("fs/proc/proc_sysctl.c: fix NULL pointer dereference in put_links")
Fixes: 0e47c99d7fe25 ("sysctl: Replace root_list with links between sysctl_table_sets")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e6abc8caa6deb14be2a206253f7e1c5e37e9515b upstream.
If there are multiple callbacks queued, waiting for the callback
slot when the callback gets shut down, then they all currently
end up acting as if they hold the slot, and call
nfsd4_cb_sequence_done() resulting in interesting side-effects.
In addition, the 'retry_nowait' path in nfsd4_cb_sequence_done()
causes a loop back to nfsd4_cb_prepare() without first freeing the
slot, which causes a deadlock when nfsd41_cb_get_slot() gets called
a second time.
This patch therefore adds a boolean to track whether or not the
callback did pick up the slot, so that it can do the right thing
in these 2 cases.
Cc: stable@vger.kernel.org
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 37659182bff1eeaaeadcfc8f853c6d2b6dbc3f47 upstream.
We missed two places that i_wrbuffer_ref_head, i_wr_ref, i_dirty_caps
and i_flushing_caps may change. When they are all zeros, we should free
i_head_snapc.
Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/38224
Reported-and-tested-by: Luis Henriques <lhenriques@suse.com>
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 76a495d666e5043ffc315695f8241f5e94a98849 upstream.
Take the d_lock here to ensure that d_name doesn't change.
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 652727bbe1b17993636346716ae5867627793647 upstream.
A path-based rename returning EBUSY will incorrectly try opening
the file with a cifs (NT Create AndX) operation on an smb2+ mount,
which causes the server to force a session close.
If the mount is smb2+, skip the fallback.
Signed-off-by: Frank Sorenson <sorenson@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* origin/upstream-f2fs-stable-linux-4.4.y:
f2fs: fix to avoid accessing xattr across the boundary
f2fs: fix to avoid potential race on sbi->unusable_block_count access/update
f2fs: add tracepoint for f2fs_filemap_fault()
f2fs: introduce DATA_GENERIC_ENHANCE
f2fs: fix to handle error in f2fs_disable_checkpoint()
f2fs: remove redundant check in f2fs_file_write_iter()
f2fs: fix to be aware of readonly device in write_checkpoint()
f2fs: fix to skip recovery on readonly device
f2fs: fix to consider multiple device for readonly check
f2fs: relocate chksum_offset for large_nat_bitmap feature
f2fs: allow unfixed f2fs_checkpoint.checksum_offset
f2fs: Replace spaces with tab
f2fs: insert space before the open parenthesis '('
f2fs: allow address pointer number of dnode aligning to specified size
f2fs: introduce f2fs_read_single_page() for cleanup
f2fs: mark is_extension_exist() inline
f2fs: fix to set FI_UPDATE_WRITE correctly
f2fs: fix to avoid panic in f2fs_inplace_write_data()
f2fs: fix to do sanity check on valid block count of segment
f2fs: fix to do sanity check on valid node/block count
f2fs: fix to avoid panic in do_recover_data()
f2fs: fix to do sanity check on free nid
f2fs: fix to do checksum even if inode page is uptodate
f2fs: fix to avoid panic in f2fs_remove_inode_page()
f2fs: fix to clear dirty inode in error path of f2fs_iget()
f2fs: remove new blank line of f2fs kernel message
f2fs: fix wrong __is_meta_io() macro
f2fs: fix to avoid panic in dec_valid_node_count()
f2fs: fix to avoid panic in dec_valid_block_count()
f2fs: fix to use inline space only if inline_xattr is enable
f2fs: fix to retrieve inline xattr space
f2fs: fix error path of recovery
f2fs: fix to avoid deadloop in foreground GC
f2fs: data: fix warning Using plain integer as NULL pointer
f2fs: add tracepoint for f2fs_file_write_iter()
f2fs: add comment for conditional compilation statement
f2fs: fix potential recursive call when enabling data_flush
f2fs: improve discard handling with multi-device volumes
f2fs: Reduce zoned block device memory usage
f2fs: Fix use of number of devices
Change-Id: I5df9e9906428ef2eb852838ec4f598599e0e5c63
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
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When we traverse xattr entries via __find_xattr(),
if the raw filesystem content is faked or any hardware failure occurs,
out-of-bound error can be detected by KASAN.
Fix the issue by introducing boundary check.
[ 38.402878] c7 1827 BUG: KASAN: slab-out-of-bounds in f2fs_getxattr+0x518/0x68c
[ 38.402891] c7 1827 Read of size 4 at addr ffffffc0b6fb35dc by task
[ 38.402935] c7 1827 Call trace:
[ 38.402952] c7 1827 [<ffffff900809003c>] dump_backtrace+0x0/0x6bc
[ 38.402966] c7 1827 [<ffffff9008090030>] show_stack+0x20/0x2c
[ 38.402981] c7 1827 [<ffffff900871ab10>] dump_stack+0xfc/0x140
[ 38.402995] c7 1827 [<ffffff9008325c40>] print_address_description+0x80/0x2d8
[ 38.403009] c7 1827 [<ffffff900832629c>] kasan_report_error+0x198/0x1fc
[ 38.403022] c7 1827 [<ffffff9008326104>] kasan_report_error+0x0/0x1fc
[ 38.403037] c7 1827 [<ffffff9008325000>] __asan_load4+0x1b0/0x1b8
[ 38.403051] c7 1827 [<ffffff90085fcc44>] f2fs_getxattr+0x518/0x68c
[ 38.403066] c7 1827 [<ffffff90085fc508>] f2fs_xattr_generic_get+0xb0/0xd0
[ 38.403080] c7 1827 [<ffffff9008395708>] __vfs_getxattr+0x1f4/0x1fc
[ 38.403096] c7 1827 [<ffffff9008621bd0>] inode_doinit_with_dentry+0x360/0x938
[ 38.403109] c7 1827 [<ffffff900862d6cc>] selinux_d_instantiate+0x2c/0x38
[ 38.403123] c7 1827 [<ffffff900861b018>] security_d_instantiate+0x68/0x98
[ 38.403136] c7 1827 [<ffffff9008377db8>] d_splice_alias+0x58/0x348
[ 38.403149] c7 1827 [<ffffff900858d16c>] f2fs_lookup+0x608/0x774
[ 38.403163] c7 1827 [<ffffff900835eacc>] lookup_slow+0x1e0/0x2cc
[ 38.403177] c7 1827 [<ffffff9008367fe0>] walk_component+0x160/0x520
[ 38.403190] c7 1827 [<ffffff9008369ef4>] path_lookupat+0x110/0x2b4
[ 38.403203] c7 1827 [<ffffff900835dd38>] filename_lookup+0x1d8/0x3a8
[ 38.403216] c7 1827 [<ffffff900835eeb0>] user_path_at_empty+0x54/0x68
[ 38.403229] c7 1827 [<ffffff9008395f44>] SyS_getxattr+0xb4/0x18c
[ 38.403241] c7 1827 [<ffffff9008084200>] el0_svc_naked+0x34/0x38
Signed-off-by: Randall Huang <huangrandall@google.com>
[Jaegeuk Kim: Fix wrong ending boundary]
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Use sbi.stat_lock to protect sbi->unusable_block_count accesss/udpate, in
order to avoid potential race on it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch adds tracepoint for f2fs_filemap_fault().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Previously, f2fs_is_valid_blkaddr(, blkaddr, DATA_GENERIC) will check
whether @blkaddr locates in main area or not.
That check is weak, since the block address in range of main area can
point to the address which is not valid in segment info table, and we
can not detect such condition, we may suffer worse corruption as system
continues running.
So this patch introduce DATA_GENERIC_ENHANCE to enhance the sanity check
which trigger SIT bitmap check rather than only range check.
This patch did below changes as wel:
- set SBI_NEED_FSCK in f2fs_is_valid_blkaddr().
- get rid of is_valid_data_blkaddr() to avoid panic if blkaddr is invalid.
- introduce verify_fio_blkaddr() to wrap fio {new,old}_blkaddr validation check.
- spread blkaddr check in:
* f2fs_get_node_info()
* __read_out_blkaddrs()
* f2fs_submit_page_read()
* ra_data_block()
* do_recover_data()
This patch can fix bug reported from bugzilla below:
https://bugzilla.kernel.org/show_bug.cgi?id=203215
https://bugzilla.kernel.org/show_bug.cgi?id=203223
https://bugzilla.kernel.org/show_bug.cgi?id=203231
https://bugzilla.kernel.org/show_bug.cgi?id=203235
https://bugzilla.kernel.org/show_bug.cgi?id=203241
= Update by Jaegeuk Kim =
DATA_GENERIC_ENHANCE enhanced to validate block addresses on read/write paths.
But, xfstest/generic/446 compalins some generated kernel messages saying invalid
bitmap was detected when reading a block. The reaons is, when we get the
block addresses from extent_cache, there is no lock to synchronize it from
truncating the blocks in parallel.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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In f2fs_disable_checkpoint(), it needs to detect and propagate error
number returned from f2fs_write_checkpoint().
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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We have already checked flag IOCB_DIRECT in the sanity
check of flag IOCB_NOWAIT, so don't have to check it
again here.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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As Park Ju Hyung reported:
Probably unrelated but a similar issue:
Warning appears upon unmounting a corrupted R/O f2fs loop image.
Should be a trivial issue to fix as well :)
[ 2373.758424] ------------[ cut here ]------------
[ 2373.758428] generic_make_request: Trying to write to read-only
block-device loop1 (partno 0)
[ 2373.758455] WARNING: CPU: 1 PID: 13950 at block/blk-core.c:2174
generic_make_request_checks+0x590/0x630
[ 2373.758556] CPU: 1 PID: 13950 Comm: umount Tainted: G O
4.19.35-zen+ #1
[ 2373.758558] Hardware name: System manufacturer System Product
Name/ROG MAXIMUS X HERO (WI-FI AC), BIOS 1704 09/14/2018
[ 2373.758564] RIP: 0010:generic_make_request_checks+0x590/0x630
[ 2373.758567] Code: 5c 03 00 00 48 8d 74 24 08 48 89 df c6 05 b5 cd
36 01 01 e8 c2 90 01 00 48 89 c6 44 89 ea 48 c7 c7 98 64 59 82 e8 d5
9b a7 ff <0f> 0b 48 8b 7b 08 e9 f2 fa ff ff 41 8b 86 98 02 00 00 49 8b
16 89
[ 2373.758570] RSP: 0018:ffff8882bdb43950 EFLAGS: 00010282
[ 2373.758573] RAX: 0000000000000050 RBX: ffff8887244c6700 RCX: 0000000000000006
[ 2373.758575] RDX: 0000000000000007 RSI: 0000000000000086 RDI: ffff88884ec56340
[ 2373.758577] RBP: ffff888849c426c0 R08: 0000000000000004 R09: 00000000000003ba
[ 2373.758579] R10: 0000000000000001 R11: 0000000000000029 R12: 0000000000001000
[ 2373.758581] R13: 0000000000000000 R14: ffff888844a2e800 R15: ffff8882bdb43ac0
[ 2373.758584] FS: 00007fc0d114f8c0(0000) GS:ffff88884ec40000(0000)
knlGS:0000000000000000
[ 2373.758586] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2373.758588] CR2: 00007fc0d1ad12c0 CR3: 00000002bdb82003 CR4: 00000000003606e0
[ 2373.758590] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 2373.758592] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 2373.758593] Call Trace:
[ 2373.758602] ? generic_make_request+0x46/0x3d0
[ 2373.758608] ? wait_woken+0x80/0x80
[ 2373.758612] ? mempool_alloc+0xb7/0x1a0
[ 2373.758618] ? submit_bio+0x30/0x110
[ 2373.758622] ? bvec_alloc+0x7c/0xd0
[ 2373.758628] ? __submit_merged_bio+0x68/0x390
[ 2373.758633] ? f2fs_submit_page_write+0x1bb/0x7f0
[ 2373.758638] ? f2fs_do_write_meta_page+0x7f/0x160
[ 2373.758642] ? __f2fs_write_meta_page+0x70/0x140
[ 2373.758647] ? f2fs_sync_meta_pages+0x140/0x250
[ 2373.758653] ? f2fs_write_checkpoint+0x5c5/0x17b0
[ 2373.758657] ? f2fs_sync_fs+0x9c/0x110
[ 2373.758664] ? sync_filesystem+0x66/0x80
[ 2373.758667] ? generic_shutdown_super+0x1d/0x100
[ 2373.758670] ? kill_block_super+0x1c/0x40
[ 2373.758674] ? kill_f2fs_super+0x64/0xb0
[ 2373.758678] ? deactivate_locked_super+0x2d/0xb0
[ 2373.758682] ? cleanup_mnt+0x65/0xa0
[ 2373.758688] ? task_work_run+0x7f/0xa0
[ 2373.758693] ? exit_to_usermode_loop+0x9c/0xa0
[ 2373.758698] ? do_syscall_64+0xc7/0xf0
[ 2373.758703] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 2373.758706] ---[ end trace 5d3639907c56271b ]---
[ 2373.758780] print_req_error: I/O error, dev loop1, sector 143048
[ 2373.758800] print_req_error: I/O error, dev loop1, sector 152200
[ 2373.758808] print_req_error: I/O error, dev loop1, sector 8192
[ 2373.758819] print_req_error: I/O error, dev loop1, sector 12272
This patch adds to detect readonly device in write_checkpoint() to avoid
trigger write IOs on it.
Reported-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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As Park Ju Hyung reported in mailing list:
https://sourceforge.net/p/linux-f2fs/mailman/message/36639787/
generic_make_request: Trying to write to read-only block-device loop0 (partno 0)
WARNING: CPU: 0 PID: 23437 at block/blk-core.c:2174 generic_make_request_checks+0x594/0x630
generic_make_request+0x46/0x3d0
submit_bio+0x30/0x110
__submit_merged_bio+0x68/0x390
f2fs_submit_page_write+0x1bb/0x7f0
f2fs_do_write_meta_page+0x7f/0x160
__f2fs_write_meta_page+0x70/0x140
f2fs_sync_meta_pages+0x140/0x250
f2fs_write_checkpoint+0x5c5/0x17b0
f2fs_sync_fs+0x9c/0x110
sync_filesystem+0x66/0x80
f2fs_recover_fsync_data+0x790/0xa30
f2fs_fill_super+0xe4e/0x1980
mount_bdev+0x518/0x610
mount_fs+0x34/0x13f
vfs_kern_mount.part.11+0x4f/0x120
do_mount+0x2d1/0xe40
__x64_sys_mount+0xbf/0xe0
do_syscall_64+0x4a/0xf0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
print_req_error: I/O error, dev loop0, sector 4096
If block device is readonly, we should never trigger write IO from
filesystem layer, but previously, orphan and journal recovery didn't
consider such condition, result in triggering above warning, fix it.
Reported-by: Park Ju Hyung <qkrwngud825@gmail.com>
Tested-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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This patch introduce f2fs_hw_is_readonly() to check whether lower
device is readonly or not, it adapts multiple device scenario.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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For large_nat_bitmap feature, there is a design flaw:
Previous:
struct f2fs_checkpoint layout:
+--------------------------+ 0x0000
| checkpoint_ver |
| ...... |
| checksum_offset |------+
| ...... | |
| sit_nat_version_bitmap[] |<-----|-------+
| ...... | | |
| checksum_value |<-----+ |
+--------------------------+ 0x1000 |
| | nat_bitmap + sit_bitmap
| payload blocks | |
| | |
+--------------------------|<-------------+
Obviously, if nat_bitmap size + sit_bitmap size is larger than
MAX_BITMAP_SIZE_IN_CKPT, nat_bitmap or sit_bitmap may overlap
checkpoint checksum's position, once checkpoint() is triggered
from kernel, nat or sit bitmap will be damaged by checksum field.
In order to fix this, let's relocate checksum_value's position
to the head of sit_nat_version_bitmap as below, then nat/sit
bitmap and chksum value update will become safe.
After:
struct f2fs_checkpoint layout:
+--------------------------+ 0x0000
| checkpoint_ver |
| ...... |
| checksum_offset |------+
| ...... | |
| sit_nat_version_bitmap[] |<-----+
| ...... |<-------------+
| | |
+--------------------------+ 0x1000 |
| | nat_bitmap + sit_bitmap
| payload blocks | |
| | |
+--------------------------|<-------------+
Related report and discussion:
https://sourceforge.net/p/linux-f2fs/mailman/message/36642346/
Reported-by: Park Ju Hyung <qkrwngud825@gmail.com>
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Previously, f2fs_checkpoint.checksum_offset points fixed position of
f2fs_checkpoint structure:
"#define CP_CHKSUM_OFFSET 4092"
It is unnecessary, and it breaks the consecutiveness of nat and sit
bitmap stored across checkpoint park block and payload blocks.
This patch allows f2fs to handle unfixed .checksum_offset.
In addition, for the case checksum value is stored in the middle of
checkpoint park, calculating checksum value with superposition method
like we did for inode_checksum.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Modify coding style
ERROR: code indent should use tabs where possible
Signed-off-by: Youngjun Yoo <youngjun.willow@gmail.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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